1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <errno.h> 30 #include <pthread.h> 31 32 #include "private/bionic_defs.h" 33 #include "pthread_internal.h" 34 35 __BIONIC_WEAK_FOR_NATIVE_BRIDGE 36 int pthread_detach(pthread_t t) { 37 pthread_internal_t* thread = __pthread_internal_find(t); 38 if (thread == NULL) { 39 return ESRCH; 40 } 41 42 ThreadJoinState old_state = THREAD_NOT_JOINED; 43 while (old_state == THREAD_NOT_JOINED && 44 !atomic_compare_exchange_weak(&thread->join_state, &old_state, THREAD_DETACHED)) { 45 } 46 47 if (old_state == THREAD_NOT_JOINED) { 48 return 0; 49 } else if (old_state == THREAD_EXITED_NOT_JOINED) { 50 // Use pthread_join to clean it up. 51 return pthread_join(t, NULL); 52 } 53 return EINVAL; 54 } 55
